Zero-bias anomalies in electrochemically fabricated nanojunctions

Abstract

A streamlined technique for the electrochemical fabrication of metal nanojunctions (MNJs) between lithographically defined electrodes is presented. The first low-temperature transport measurements in such structures reveal suppression of the conductance near zero-bias. The size of the zero-bias anomaly (ZBA) depends strongly on the fabrication electrochemistry and the dimensions of the resulting MNJ. We present evidence that the nonperturbative ZBA in atomic-scale junctions is due to a density of states suppression in the leads.

4 pages, 4 figures

References in corpus (5)

• Controlled Fabrication of Metallic Electrodes with Atomic Separation
• Nanometer-spaced platinum electrodes with calibrated separation
• Coulomb Interaction and Quantum Transport through a Coherent Scatterer
• Non-equilibrium electronic transport and interaction in short metallic nanobridges
• Metal Nanowires: Quantum Transport, Cohesion, and Stability

Cited by in corpus (6)

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• Critical behavior of density of states near Fermi energy in low-dimensional disordered metals
• Spin-Based Magnetofingerprints and Dephasing in Strongly Disordered Au-Nanobridges